In Germany there are sites like "Stifung Warentest" (a mostly neutral product testing organization) that charge one-time fees of 5-10 € for accessing test reports for specific product categories, e.g. mattresses. I bought some of these in the past, they also offer regular subscriptions but since most people are only intermittently interested in specific product tests I don't think they sell a lot of those. So it can work I'd say, just maybe not with your average run-of-the-mill 5-minute read news article.